Milton 469 2 1 2" TR 618A Tubeless Air Liquid Valve (Box of 5) Allison stainless steel push button drain valve Premium High Performance stainless steel push button drain valve mounts in open 3 4" or 2" bung 339277 1 Pressure Relief Valve – 900 psi (62 bar) max pressure 339277 2 Pressure Relief Valve – 1400 psi (96 bar) max pressure 339276 Pressure Relief Valve Installation Kit – Includes 3 ft (91 cm) connecting hose and (2) tee reducing branches 317813 2 Medium Pressure Hose for Oil These 2 1 2" tubeless air and liquid tire valves are designed for farm tractor and road grader tires these TR 618A type tubeless tire valves offer a maximum pressure of 90 PSI